331 Area Code

12 cities use the 331 area code in Illinois.

The 331 area code spans 3 counties in Illinois.

Median age: 37.97

Median age in Area Code 331 is 37.97 years. 11.84% of residents are aged 0-9. 13.15% of residents are aged 10-19. The percentage of residents in their twenties is 14.02. 15.18 % are in their thirties, 13.24% in their fourties, 13.03 % in their fifties, and 10.67 % in their sixties. 5.67 % of residents are in their seventies and 3.17 % are eighty and over.

50.81% are female
49.19% are male

49.19% of residents in Area Code 331 are male and 50.81% are female. 51.27% of residents are married and 9.50% are divorced. 34.90% have never been married. 4.33% are widowed. The average size of resident families is 3.19.

Median household income: 102,259.41
62.38% have two income earners
49.57% of households earn $100,000+

Median household income in Area Code 331 is $102,259.41 with 62.38% of families having two income earners. 49.57% of households earn at least $100,000. 2.82% of households have an income under $5,000, 1.56% from $5,000-$10,000, 2.05% from $10,000-$15,000, 2.63% from $15,000-$20,000, 2.53% from $20,000-$25,000, 4.99% from $25,000-$35,000, 8.11% from $35,000-$50,000, 13.29% from $50,000-$75,000, 12.42% from $75,000-$100,000, 19.54% from $100,000-$150,000 and 30.02% over $150,000. The median income of individuals is $51,614.55.

Median home value: $338,952.34
Median rent: $1,530.94
Rent burden: 29.02%

68.34% of households in Area Code 331 own (rather than rent) their residence. The median value of those homes is $338,952.34. The median rent paid by renters is $1,530.94 or 29.02% of the median renter's household income.

46.56% have a Science and Engineering degree

7.38% of residents in Area Code 331 have less than a high school education. 16.36% have a high school diploma but no more. 22.67% of residents have some college but no more. 30.28% have a bachelor's degree (or equivalent) but no more. 23.34% have a graduate degree. 46.56% have a Bachelor's degree or higher in a Science and Engineering (or related) field.

29.79 minutes of commute time

69.48% of residents in Area Code 331 16 and older are in the labor force. 5.45% of residents are unemployed. The median commute time of resident workers in Area Code 331 is 29.79 minutes.

16.61% report being Hispanic

67.13% of residents in Area Code 331 report their race as White. 8.66% report their race as Black or African American. 12.72% report their race as Asian. 0.32% report their race as American Indian and Alaska Native. 0.05% report their race as Native Hawaiian and Other Pacific Islander. 4.50% report their race as Some other race. 6.65% report their race as Two or more races. 16.61% report being Hispanic. Note: Hispanic is considered to be an ethnicity and not a race.

8.30% report a disability
4.71% speak limited English
5.45% have no health insurance
3.85% are veterans

8.30% of residents in Area Code 331 report a disability. 4.71% of residents only speak limited English. 5.45% of residents report not having health insurance. 3.85% of residents are veterans.

There are 26 ZIP codes within the 331 area code, covering cities across 3 counties in Illinois.

• 217 (Peoria, IL)
• 224 (Chicago, IL)
• 309 (Peoria, IL)
• 312 (Chicago, IL)
• 447 (Champaign, IL)
• 464 (Chicago, IL)
• 618 (Chicago, IL)
• 630 (Chicago, IL)
• 708 (Chicago, IL)
• 773 (Chicago, IL)
• 779 (Chicago, IL)
• 815 (Chicago, IL)
• 847 (Chicago, IL)
• 872 (Chicago, IL)